Factory Tires

Factory tires can also be much lighter. Less unsprung weight leads to better starts and the way they work in the bumps. They can do that because they know they are just being used for a moto. Your off the shelf knobby is built with the idea that you will mount it and then run your MX bike down a dirt road flat out. So to avoid lawsuits etc it's much heavier duty than it needs to be.

[quote="FLvet":2jlsde6y]Factory tires can also be much lighter. Less unsprung weight leads to better starts and the way they work in the bumps. They can do that because they know they are just being used for a moto. Your off the shelf knobby is built with the idea that you will mount it and then run your MX bike down a dirt road flat out. So to avoid lawsuits etc it's much heavier duty than it needs to be.[/quote:2jlsde6y]

So you are saying Factory tires can blow out?

[quote:2p33e3nf]Tires are not "works"

I can make my own tires and use them
There's no spec tire rule[/quote:2p33e3nf]

yup, no paddles though thanks to the jammer.

[quote="Crash82":3vmv2zrh][quote="FLvet":3vmv2zrh]Factory tires can also be much lighter. Less unsprung weight leads to better starts and the way they work in the bumps. They can do that because they know they are just being used for a moto. Your off the shelf knobby is built with the idea that you will mount it and then run your MX bike down a dirt road flat out. So to avoid lawsuits etc it's much heavier duty than it needs to be.[/quote:3vmv2zrh]

So you are saying Factory tires can blow out?[/quote:3vmv2zrh]
Not really but they aren't made to last like a tire you or I can buy. For example they may have a choice of a two or four ply tire where the one we buy is a four or even six ply. So they get more sidewall flex for better traction. With the 450s they had to go back and made the tires stiffer because they had to much flex with some of the two smoke tires..

[quote="FLvet":67ozmwl3]Factory tires can also be much lighter. Less unsprung weight leads to better starts and the way they work in the bumps. They can do that because they know they are just being used for a moto. Your off the shelf knobby is built with the idea that you will mount it and then run your MX bike down a dirt road flat out. So to avoid lawsuits etc it's much heavier duty than it needs to be.[/quote:67ozmwl3]


that and the fact no one will buy their tires if they have to buy a new set every weekend.

I ran Dunlop 756RR when they were sellilng them and they hooked up so good it was amazing. You could really feel the difference. Problem was I kept getting a flat every time I ran them so after a pair of them I went back to regular 756. I think the compound was just too soft and a rock would blow it out every time but damn they hooked up great.

I googled cheng shin and got this.

[img:2bjbeg9r]https://thedefeatists.typepad.com/apoplectic/images/2007/10/18/koreanwa…]

Cheng Shin is Maxxis

I was raggin' on a very well known older current AMA MX Pro about how beat his tires were and he pointed out that they were factory throw aways and even worn out, they were better than off the shelf. The tires he had WERE pretty trick after he pointed out some of the advantages.

[quote="mx317":353my7rl]
It was at Oakland Ca SX.[/quote:353my7rl]

That's it! Thanks!

used to get "throw aways" after practice etc at the dallas supercross in the early 90's. cool stuff for sure. even a few hand me downs from grayson goodmans mechanic when he was riding suzukis. there is a difference for sure. i would imagine now more than then.

Well if you are in the pro pits on Saturday and you go to the dunlop truck to get your riders tires changed and you see a set you like you can take them off the used tire pile. On Sunday after they changed all the factory riders tires there is a pile of unmarked tires. If you try to take one of those they (the dounlop guys) don't seem real nice. Those are off limits.

[quote="wildbill":14c5f684]I googled cheng shin and got this.

[img:14c5f684]https://thedefeatists.typepad.com/apoplectic/images/2007/10/18/koreanwa…]
a set of whoops?

[quote="Crash82":1hdzasa2][quote="flarider":1hdzasa2]Not saying he doesn't know what he's talking about, but I think SpeedyR knows a lot more than the hand me down guy[/quote:1hdzasa2]

Yes Dave, while Speedy's post was informative, J2one2 has hands on knowledge. In my opinion, without proper testing, it would be hard to prove which one knows a lot more. [/quote:1hdzasa2]

I've done plenty of hands on testing. I still can't ride for squat... " title="Smile">

seriously someone did bring up another issue. Lightweight tires. that's definitely an option for the top guys. the tires are lighter depending upon terrain and rider. in the outdoors, most of the top riders will run w/ mousse inserts. a mousse typically gives you about the same feel as a tire at about 8psi. the mousse however is much heavier than a tube. because you aren't concerned with pinch flats with mousse, but it is heavier, you can run a lighter tire to compensate for the heavier mousse. usually as someone pointed out, it's a lighter carcass with a few less plies. if you try to run one of the lighter tires without mousse however they don't perform very well and tend to really push a lot in a harder turn. tire will roll over on the rim. it's a system approach basically. one component without the others doesn't help much. and most amateur and even pro riders don't like to change mousse. Well except folks like Jeff Fredette. " title="Wink">

supercross they still run tubes because of the feel and the weight. the tires are a bit lighter than an "OE" tire but not as much as what they might run in the outdoors. some brands are just heavier than others. like someone said, the lighter wheel/tires will provide much better suspension action and more consistency. but you can get a flat even with perfect prep (witness KW in A3). oh well.

IMHO that is.